JEE MAIN - Chemistry (2019 - 10th January Morning Slot - No. 3)
The decreasing order of ease of alkaline hydrolysis for the following esters in
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III > II > IV > I
IV > II > III > I
III > II > I > IV
II > III > I > IV
Explanation
More is the electrophilic character of carbonyl group of ester faster is the alkaline hydrolysis.
Since –I effect groups increase the electrophilic nature of carboxyl carbon whereas +I effect groups decrease the electrophilic nature of carboxyl carbon. Therefore, the correct decreasing order is III > II > I > IV.
Since –I effect groups increase the electrophilic nature of carboxyl carbon whereas +I effect groups decrease the electrophilic nature of carboxyl carbon. Therefore, the correct decreasing order is III > II > I > IV.
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